Description: Carbon dioxide concentration detection, thermometer, and hygrometer in . Simple operation: long press the key on the right side for 3 seconds to turn on and off. No need to calibrate after starting up, work, and detect automatically. Battery: Built-in lithium battery 1500mAh,USB power cord. CO2 Detector. It displays the current CO2 data, as well as the temperature and humidity data, the colored will change according to the CO2 content. 2.5inch color screen, compact and portable, can be placed in the kitchen, bathroom, living room, desk, coffee table, and other environments. Specification: Material: Plastic. CO2 Detection Range: 400-6000PPM. CO2 Detection Sensitivity: 1PPM. TVOC Detection Range: 0-2PPM. Temp Measurement Range: -10~70Celsius. Temp Measurement Accuracy: ±1Celsius. Humidity Measurement Range: 0%~99%RH. Humidity measurement Accuracy: ±2%RH. Charging Mode: DC5V 500mA micro USB interface. Battery: built-in lithium battery 1500mAh. Size: 88x70x35mm/3.46x2.75x1.18in. Screen: 2.75in. Package Includes: 1 x Host. 1 x USB Charging Cable. 1 x Manual. Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement.